class_docstr: IGNORE is a Plex action which causes its associated token
  to be ignored. See the docstring of Plex.Lexicon  for more
  information.
code: def perform(self, token_stream, text):
      return None
  
label_desc: Use image node_id 1 for calling the Ignore obj's underlying member method code with example usage: obj.perform(token_stream, text) and returns: None